Three and four-fifths
I think it's 1 and 2/5
Eleven- fifths plus four- fifths equals fifteen- fifths, which reduces to three wholes. (11/5+4/5=15/5, or 3/1)
It is 1.175
four fifths is equal to eight tents, so three tenths plus eight tenths is eleven tenths, or one and one tenth
seven and two fifths
Expressed as a mixed number in its simplest form, 4/5 + 4/5 = 1 3/5 or one and three fifths.